**Product Specifications:**
**HB Anti-slip Glasses Strap for Children:**
Brand: HB
Product Name: Anti-slip Glasses Strap
Material: Silicone + Soft Steel Wire
Quantity: 2 pieces per box
Weight: 4.3 grams
Suitable for: Children aged 6-12 years
Glasses Leg Width: 4.5cm
Features: Adjustable length, soft and durable material, double-hole anti-slip design for children, can be shortened to 180mm and extended to 250mm
Note: Measurements may have slight deviations, please refer to actual product
**HB Anti-slip Glasses Strap for Adults:**
Brand: HB
Product Name: Anti-slip Glasses Strap
Material: Silicone + Soft Steel Wire
Quantity: 2 pieces per box
Weight: 4.8 grams
Suitable for: Children aged 12 years and above and adults
Glasses Leg Width: 4.5cm
Features: Adjustable length, soft and durable material, double-hole anti-slip design for adults, can be shortened to 205mm and extended to 300mm
Note: Measurements may have slight deviations, please refer to actual product
**HB Ergonomic Adjustable Glasses Strap:**
Brand: HB
Product Name: Ergonomic Adjustable Glasses Strap
Features: Free adjustable buckle design, suitable for both children and adults, enjoy sports and life without constraints, magnetic buckle for easy length adjustment, soft silicone sleeve for comfort and anti-slip
Note: Ergonomic design for comfortable and secure fit, suitable for various leg widths, human body engineering design for comfortable and anti-slip wear